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公开(公告)号：US10250179B2
公开(公告)日：2019-04-02
申请号：US15377849
申请日：2016-12-13
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki
Abstract: A power converter for converting an electric power for a motor that has three-phase winding wires includes an inverter and a controller. The controller controls the electric power supplied for the three-phase winding wires. The controller either (i) sets a two-phase modulation period for performing a two-phase modulation control when a third-order harmonic frequency that is calculated as triple the frequency of a fundamental frequency of the phase currents is smaller than an audible lower limit frequency of a human audible frequency range, or (ii) performs a three-phase modulation control, when the third-order harmonic frequency is equal to or greater than the audible lower limit frequency. In such manner, a heat generation from the maximum heat generating portion of the power converter is mitigated, and acoustical noise that is generated in the audible frequency range is reduced.
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公开(公告)号：US20180131306A1
公开(公告)日：2018-05-10
申请号：US15801650
申请日：2017-11-02
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki , Yoshitaka Hayashi
CPC classification number: H02P25/22 , B62D5/0487 , H02P6/12 , H02P29/024 , H02P29/027 , H02P29/028
Abstract: A rotary electric machine system includes a rotary electric machine, first and second power-supply systems, a sensor, a first abnormality determination section determining whether an abnormality has occurred in a first armature-winding group, the first power-supply system, or the sensor, a second abnormality determination section that, on condition an abnormality has been determined, controls power output depending on a type of the abnormality, increases current flowing from the second power-supply system to a second armature-winding group when output torque due to current flowing to the first armature-winding group decreases, to increase output torque due to the current flowing to the second armature-winding group, and determines whether an abnormality has occurred in one of the first armature-winding group, the first power-supply system, and the sensor, and a prohibition section that, on condition that an abnormality has been determined, prohibits power supply from the first power-supply system to the first armature-winding group.
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公开(公告)号：US09912282B2
公开(公告)日：2018-03-06
申请号：US15273476
申请日：2016-09-22
Applicant: DENSO CORPORATION
Inventor： Daisuke Kobayashi , Takashi Suzuki
CPC classification number: H02P29/68 , H02M2001/327 , H02P6/14 , H02P27/06 , H02P29/032
Abstract: A motor control device includes: a substrate on a heat sink; switching elements providing a power converter; a drive circuit IC having a pre-driver; a control circuit IC having a current control unit; first and second temperature detectors; and a temperature estimation unit of evaluation places. When the current control unit is halted after operation and is restarted after halt, the temperature estimation unit: stores estimated temperature and the first and second detected temperature at the halt; calculates, as an estimated gain, a ratio of a temperature difference at the halt to a temperature difference at restart; and estimates temperature at the restart based on a temperature difference obtained by multiplying a temperature difference between the first detected temperature and the estimated temperature at the halt by the estimated gain, and increased temperature.
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公开(公告)号：US09553531B2
公开(公告)日：2017-01-24
申请号：US15046180
申请日：2016-02-17
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki
CPC classification number: H02P6/10 , B62D5/046 , H02M1/14 , H02M7/48 , H02M7/5387 , H02P25/22 , H02P27/08 , H02P29/68
Abstract: A power converter that reduces a ripple of a torque and a ripple of an electric current in a switch period, having a controller including an instruction calculator that calculates a first voltage instruction value and a second voltage instruction value when, in a first period, a first neutral point voltage is shifted below a center-of-output value, and a second neutral point voltage is shifted above the center-of-output value, and, in a second period, the first neutral point voltage is shifted above the center-of-output value, and the second neutral point voltage is shifted below the center-of-output value.
Abstract translation: 一种功率转换器，其在开关周期内减小转矩的纹波和电流的纹波，具有包括计算第一电压指令值和第二电压指令值的指令计算器的控制器，当在第一周期中， 第一中性点电压被转换到低于输出中心值，并且第二中性点电压偏移到输出中心值以上，并且在第二时段中，第一中性点电压偏移到中心点电压以上， 的输出值，第二中性点电压偏移到输出中心值以下。
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公开(公告)号：US09553530B2
公开(公告)日：2017-01-24
申请号：US15046173
申请日：2016-02-17
Applicant: DENSO CORPORATION
Inventor： Ryo Kano , Takashi Suzuki
Abstract: A power converter a controller that includes an instruction calculator calculating a first voltage instruction value that is applied to a first winding group, for example. An application voltage to the first winding group is controlled, for example, in a first period so that a first neutral point voltage shifts below a center-of-output value of an outputtable range is outputted, and a second neutral point voltage shifts above the center-of-output value of the outputtable range. The instruction calculator calculates the first instruction value for enabling a switching between the periods, after a lapse of a switch period that is variably calculated based on a preset physical quantity. In such manner, a ripple of a torque or an electric current accompanying the switching between the periods is reduced.
Abstract translation: 一种电力转换器，包括例如计算应用于第一绕组组的第一电压指令值的指令计算器的控制器。 第一绕组组的施加电压例如在第一时间段中被控制，使得第一中性点电压偏移到可输出范围的输出中心值以下，并且第二中性点电压在 输出范围的输出中心值。 指令计算器计算用于在经过基于预设物理量可变地计算的开关周期之后的周期之间进行切换的第一指令值。 以这种方式，伴随着周期之间的切换的扭矩或电流的波动减小。
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Patent Agency Ranking
66.发明授权公开(公告)号：US09520817B2
公开(公告)日：2016-12-13
申请号：US14489073
申请日：2014-09-17
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki
IPC: H02P6/10 , B62D5/04 , H02P21/05 , H02M7/5387 , H02M1/38
CPC classification number: H02P6/10 , B62D5/046 , B62D5/0463 , H02M7/53875 , H02M2001/385 , H02M2007/53876 , H02P21/05
Abstract: A power conversion apparatus includes: an inverter unit having high and low potential-side switching elements corresponding to each phase of a winding of a rotating electrical machine; a current detecting unit; and a control unit controlling the switching elements based on a PWM reference signal and a duty instruction value. The control unit includes: a phase current computing device; and a voltage instruction value computing device. The control unit computes an active voltage vector interval in first and second half periods of one or multiple cycles of the PWM reference signal to be a predetermined period or longer, and computes first and second half duty instruction values to set first and second voltage vector intervals equal to or longer than minimum time to be in the first or second half period.
Abstract translation: 一种电力转换装置，包括：逆变器单元，具有与旋转电机的绕组的各相对应的高低电位侧开关元件; 电流检测单元; 以及控制单元，其基于PWM参考信号和占空指令值来控制开关元件。 控制单元包括：相电流计算装置; 和电压指令值计算装置。 控制单元将PWM参考信号的一个或多个周期的第一和第二半周期中的有效电压矢量间隔计算为预定周期或更长时间，并且计算第一和第二半占空指令值以设置第一和第二电压矢量间隔 等于或长于在第一个或第二个半周期的最短时间。
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公开(公告)号：US20160204730A1
公开(公告)日：2016-07-14
申请号：US14993997
申请日：2016-01-12
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki
IPC: H02P29/028 , H02P21/14 , H02P27/06
CPC classification number: H02P29/028 , H02P21/14 , H02P27/06 , H02P29/032
Abstract: A rotating electric machine control device includes: an inverter in each winding set of a rotating electric machine having high and low potential-side switching elements corresponding to each phase; and a controller. The controller has: a signal generator of a control signal for turning on and off the high and low potential-side switching elements; a disturbance voltage estimating device calculating a disturbance voltage estimation value of a disturbance voltage, which is generated in a normal system, based on a current flowing in a failure system when the short circuit failure occurs; and a command calculating device calculating a normal system command value in accordance with the disturbance voltage estimation value.
Abstract translation: 旋转电机控制装置包括：具有与各相对应的高电位侧开关元件和低电位侧开关元件的旋转电机的绕组组中的逆变器; 和控制器。 控制器具有：用于接通和断开高低电位侧开关元件的控制信号的信号发生器; 干扰电压估计装置，在发生短路故障的情况下，基于在故障系统中流动的电流，计算在正常系统中产生的干扰电压的干扰电压估计值; 以及根据干扰电压估计值计算正常系统命令值的命令计算装置。
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公开(公告)号：US09374031B2
公开(公告)日：2016-06-21
申请号：US13867297
申请日：2013-04-22
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki , Takeshi Itoh , Hirofumi Kako
CPC classification number: H02P21/14
Abstract: A control apparatus for an AC motor includes a current sensor and an estimation section. The current sensor detects current flowing through one phase of the motor. The estimation section repeats an estimation process. In the estimation process, d-axis and q-axis current estimation values are calculated based on the presently detected current of the one phase and a previous current estimation value of another phase of the motor, and a present current estimation value of each phase is calculated based on smoothed values of the d-axis and q-axis current estimation values. The estimation section performs the estimation process based on a phase lag element. The phase lag element is a difference between the presently detected current and a previous current estimation value of the one phase or the previously detected current.
Abstract translation: 用于交流电动机的控制装置包括电流传感器和估计部分。 电流传感器检测流经电机一相的电流。 估计部分重复估计过程。 在估计处理中，基于当前检测到的一相的电流和电动机的另一相的前一个电流估计值来计算d轴和q轴电流估计值，并且各相的当前估计值为 基于d轴和q轴电流估计值的平滑值计算。 估计部分基于相位滞后元件执行估计处理。 相位滞后元件是当前检测到的电流与一相或先前检测电流的先前电流估计值之间的差。
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69.发明授权公开(公告)号：US09371087B2
公开(公告)日：2016-06-21
申请号：US14597004
申请日：2015-01-14
Applicant: DENSO CORPORATION
Inventor： Takashi Suzuki
CPC classification number: B62D5/046 , B60W10/08 , B60W20/00 , B62D5/049 , H02P29/0241 , Y02T10/7005 , Y02T10/7077
Abstract: A power conversion device includes: an inverter that includes high potential side switching elements connected to a high potential side and low potential side switching elements connected to a low potential side, and converts a current for supplying a rotating electric machine; a current detector having a sensor disposed on at least one of a positive bus for connecting the high potential side switching elements and a positive side of a DC power supply or a negative bus for connecting the low potential side switching elements and a negative side of the DC power supply; an energization device that energizes the sensor without passing through the inverter; and a controller that acquires a current detection value from the current detector, and controls the inverter and the energization device. The energization device energizes the sensor when all of high or low potential side switching elements are off.
Abstract translation: 电力转换装置包括：逆变器，其包括连接到高电位侧的高电位侧开关元件和连接到低电位侧的低电位侧开关元件，并且转换用于供给旋转电机的电流; 电流检测器，其具有设置在用于连接高电位侧开关元件的正母线和用于连接低电位侧开关元件的直流电源或负母线的正侧中的至少一个上的传感器， 直流电源; 通电装置，在不通过逆变器的情况下对传感器通电; 以及控制器，其从电流检测器获取电流检测值，并控制逆变器和通电装置。 当所有高电位或低电位侧开关元件断开时，通电装置使传感器通电。
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公开(公告)号：US09350286B2
公开(公告)日：2016-05-24
申请号：US14202777
申请日：2014-03-10
Applicant: DENSO CORPORATION
Inventor： Takafumi Satou , Takashi Suzuki
CPC classification number: H02P25/22 , H02P29/032
Abstract: A power converter is for a rotating electrical machine including first and second winding sets, each of which has coils corresponding to phases of the rotating electrical machine. In the power converter, a first inverter energizes the first winding set, a second inverter energizes the second winding set, a current sensor detects a phase current flowing through each coil, and a control section drives the first and second inverters respectively based on first and second voltage command signals. The first inverter and the first winding set form a first system. The second inverter and the second winding set form a second system. The control section calculates the first and second voltage command signals so that average voltages applied to the first and second winding sets can be different from each other. The failure detector detects whether a short-circuit occurs between the first and second systems based on each phase current.
Abstract translation: 电力转换器是用于包括第一和第二绕组的旋转电机，每个绕组具有对应于旋转电机的相位的线圈。 在功率转换器中，第一变换器使第一绕组组通电，第二变换器对第二绕组组通电，电流传感器检测流过每个线圈的相电流，并且控制部分分别基于第一和第二绕组组驱动第一和第二逆变器， 第二电压指令信号。 第一变频器和第一绕组组形成第一系统。 第二逆变器和第二绕组组形成第二系统。 控制部分计算第一和第二电压指令信号，使得施加到第一和第二绕组的平均电压可以彼此不同。 故障检测器基于每个相电流检测第一和第二系统之间是否发生短路。
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